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Summary: Learn how to resolve the "compileSdkVersion is not specified" error during the setup of React Native Reanimated by modifying your build.gradle file.
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How to Fix compileSdkVersion Not Specified Error in React Native Reanimated Setup

When working on a React Native project that integrates with Reanimated, you may run into the following error:

[[See Video to Reveal this Text or Code Snippet]]

This seemingly cryptic error essentially means that the Android build.gradle file lacks a specified SDK version for the project to compile against. Resolving this error is crucial for smooth compilation and running of your React Native application.

Understanding the Error

The compileSdkVersion is a key parameter in the build.gradle file for Android projects. It informs the Gradle build system about which Android API level to use for compiling your project. Without it, the build system doesn't know which version of the Android SDK should be used, leading to an error.

Steps to Fix the Error

To resolve this issue, you need to add or verify the presence of the compileSdkVersion parameter in your build.gradle file. Here’s a step-by-step guide on how to do this:

Open Your Project's build.gradle File:
Navigate to the android/app directory of your React Native project and open the build.gradle file.

Locate the android Block:
Inside the build.gradle file, look for the android block which holds various configurations for your Android project.

Add/Update compileSdkVersion:
Inside the android block, ensure that the compileSdkVersion parameter is specified. Here’s an example configuration:

[[See Video to Reveal this Text or Code Snippet]]

Sync the Project:
After making these changes, sync your Gradle files. In Android Studio, you can do this by clicking "Sync Now" when prompted, or by selecting it from the toolbar.

Rebuild the Project:
Clean and rebuild your project to ensure that the changes take effect. You can clean your project using ./gradlew clean and rebuild it using ./gradlew build from your terminal.

Additional Tips

Choose the Correct SDK Version: Always aim to use the latest stable SDK version that is compatible with your project's dependencies.

Check for Consistency: Ensure that the targetSdkVersion and compileSdkVersion are consistent with the libraries and tools you're using.

Conclusion

By adding or updating the compileSdkVersion in your build.gradle file, you can easily fix the "compileSdkVersion is not specified" error in React Native Reanimated setups. It’s a simple yet essential step to ensure your project compiles correctly without any hitches. Happy coding!